†family Polymastodontidae Cope 1884
Mammalia - Multituberculata - Polymastodontidae
Alternative spelling: Polymastodontinae
Parent taxon: Plagiaulacoidae according to O. P. Hay 1930
See also Cope 1889, Flower and Lydekker 1891, Hay 1902 and Lydekker 1894
Sister taxa: Albionbaataridae, Allodontoidea, Argillomys, Gondwanatherioidea, Iberica, Janumys, Paulchoffatioidea, Pinheirodontidae, Plagiaulacidae
Subtaxa: none
Type: Polymastodon
Distribution: there are no occurrences of Polymastodontidae in the database